When he was just 17 years old, Zurbuchen enlisted and became a B-17 gunner in the Air Force.

He flew in part of a plane called a ball turret, similar to the one featured in this photograph. His job as the gunner was to stay inside that circular pod and fire at any encroaching enemies.

In 1944, Zurbuchen was injured while on his 10th mission. The Purple Heart is given to members of the U.S. military who are wounded in combat at the hands of the enemy.

However, a fire destroyed Zurbuchen's paperwork, and he was never awarded the honor.

Zurbuchen told WLUK: "It's just something that you earned and something you should get."

Earlier this year, TheNorthwestern.com reports Zurbuchen met Chris Henry from the museum, and it was Henry who became determined to get the veteran his Purple Heart. With the help of Zurbuchen's family and the U.S. Army, Henry made it happen.

The National Purple Heart Hall of Honor estimates around 1.8 million Purple Hearts have been awarded to wounded military members and their families. This is just an estimate, as no official record has ever been kept.

According to a piece written for the National Archives' Prologue magazine, the Purple Heart is "the oldest U.S. military decoration," and before Japan's attack on Pearl Harbor, the award could not be given out to any service member who had already died.

Zurbuchen is the only remaining member of the crew he worked with during World War II.